Preparation and microstructure of spinel zinc ferrite ZnFe2O4 by Co-precipitation method

Ren, Ping; Deng, Huiyong

doi:10.1007/s11595-009-6927-y

Cited by 25 publications

(10 citation statements)

References 28 publications

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“…In the two highest Fe: Zn ratio catalysts, 2.4Fe and 2.5Fe, there is an additional peak at ~33° (highlighted in blue) which does not correspond to zinc ferrite, however it does correlate to a reflection found in the x-ray diffraction pattern for α-Fe 2 O 3 , indicating the presence of α-Fe 2 O 3 at higher Fe: Zn ratios. The presence of an α-Fe 2 O 3 phase being produced alongside the ZnFe 2 O 4 phase is documented in other studies [28,29]. The commercial zinc ferrite sample gave an XRD pattern identical to that for the sample with a Fe: Zn ratio of 2.0.…”

Section: Xps Analysissupporting

confidence: 71%

Effect of Excess Iron on Oxidative Dehydrogenation of 1-Butene over a Series of Zinc Ferrite Catalysts

Black

Spence

Whiston

et al. 2018

PPS

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The influence of excess Fe 3+ in ZnFe 2 O 4 for the catalytic oxidative dehydrogenation of 1-butene to 1, 3-butadiene was investigated to try to clarify inconsistencies in the existing literature. A series of nanoscale zinc ferrite powders were produced with increasing Fe: Zn ratios. The materials were characterized by a range of techniques, which showed the presence of α-Fe 2 O 3 as a distinct phase with an increasing excess of Fe 3+ and SEM highlighted the increased presence of surface structures on the ferrites at higher Fe: Zn ratios. Reaction testing showed α-Fe 2 O 3 to be virtually inactive for the oxidative dehydrogenation of 1-butene. Results for the ferrite catalysts showed a significant decrease in both conversion and yield with an increasing excess of Fe 3+ . Therefore an excess of Fe 3+ has a negative effect on catalytic activity and selectivity of zinc ferrite for the oxidative dehydrogenation of 1-butene, but acts as a promoter for competing hydrogenation and combustion side reactions.

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Section: Xps Analysissupporting

confidence: 71%

Effect of Excess Iron on Oxidative Dehydrogenation of 1-Butene over a Series of Zinc Ferrite Catalysts

Black

Spence

Whiston

et al. 2018

PPS

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“…Once dried, the nanoparticles can then be calcined at different temperatures to specify the impact of the temperature on the activity of the samples. [36][37][38]…”

Section: Co-precipitation Methodsmentioning

confidence: 99%

Zinc Ferrite Nanoparticles in Photo-Degradation of Dye: Mini-Review

et al. 2020

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Organic pollutants are the largest kind of pollutants released into waters and wastewater from the some industry and industrial processes. Photocatalytic degradation is one of the significant and effective methods to remove the dyes and other organic pollutant from water and wastewater. This mini-review presents the application of zinc ferrites and ZnFe2O4-based composites in the photocatalytic degradation of organic dye. The zinc ferrite nanomaterials are obtained mainly by thermal methods, sol-gel, co-precipitation, and solid-state or hydrothermal route. Zinc Ferrites have good photocatalytic activity, but when exploited as composite photocatalysts, their photocatalytic efficiency were increased. AS a critical magnetic material, the ZnFe2O4 spinel structure has been proven to be useful in removal dye, ZnFe2O4 have photocatalytic activity under visible light irradiation. However, it is possible to improve the efficiency of photocatalysis activity of ZnFe2O4 by coupling it with another semiconductor or coupling it with carbon nanotubes and graphene, resulting in enhanced photocatalytic performance. Abstract: Biography:Fatemeh Ajormal has completed BS in chemistry in Shahid Chamran University from ahwaz in 2010. She has Master's degree in organic chemistry from University of Zanjan, at the moment she is a PhD student in organic chemistry. Her area of research interest is synthesis of heterocyclic Compounds, Synthesis of complexes and Application of Catalytic them.

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“…transformation of metal hydroxides into ferrites [21]. In the case of co-precipitation of ferrite particles at lower pH values, different forms of iron oxides can be formed, unless the ratio of ions is increased [22].…”

Section: Sto-nfo Particles Synthesized At Ph~6mentioning

confidence: 99%

Influence of synthesis conditions on formation of core–shell titanate–ferrite particles and processing of composite ceramics

Mojić-Lanté

Vukmirović

Giannakopoulos

et al. 2015

Ceramics International

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Preparation and microstructure of spinel zinc ferrite ZnFe2O4 by Co-precipitation method

Cited by 25 publications

References 28 publications

Effect of Excess Iron on Oxidative Dehydrogenation of 1-Butene over a Series of Zinc Ferrite Catalysts

Effect of Excess Iron on Oxidative Dehydrogenation of 1-Butene over a Series of Zinc Ferrite Catalysts

Zinc Ferrite Nanoparticles in Photo-Degradation of Dye: Mini-Review

Influence of synthesis conditions on formation of core–shell titanate–ferrite particles and processing of composite ceramics

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